PHP script to output hex via COM1

[rowantrimmer]

This is an interesting one for all you PHP people.

I need to create a small script in php where I can output a hex string through com1. I need to do this to turn a projector on or off ?

Any ideas ?

[bad76]

Hi
something like...

echo exec('type put_it_on >com1:');

... may work, if you are lucky.

bye bye

[AstroTeg]

I haven't tried it with PHP, but in theory, you might be able to use the [man]fopen[/man] and its related functions. More specifically for use with *nix (but you'll need to find the system name for the com port (ttyS0, ttyS1, etc - I think). If its Windows, the "datatosend > com1" trick should work. I believe you may be able to open the port with fopen and using "com1" as the file name, but I'm not positive.

Worse comes to worse, a really simple C/C++ app could be created to do it and PHP just calls it.